ssh sftp 상위 폴더 접근제한 (chroot)

# vi /etc/ssh/sshd_config

PermitRootLogin yes

#Subsystem      sftp    /usr/libexec/openssh/sftp-server
Subsystem sftp internal-sftp

Match User testuser
        ChrootDirectory /home/engineer/test
        ForceCommand internal-sftp
        X11Forwarding no
        AllowTCPForwarding no

# service sshd restart

chroot디렉토리 설정한 /home/engineer/test 는 755 권한

chroot와 상위디렉토리는 chown root:testuser test

쓰기권한이 필요하면 /home/engineer/test/쓰기권한폴더 생성하도록

# tail -f /var/log/secure

fatal: bad ownership or modes for chroot directory "/home/engineer/test" [postauth]

오류뜨면 소유자와 755권한인지 체크해볼것